Rubber member molding method

A rubber member molding method for molding a rubber member having a belt shape by attaching rubber discharged from a die to a molding surface while relatively moving the die and the molding surface in a direction along the molding surface, the rubber member molding method comprising:

• setting, as an abutting position, a position where a first one of the die and the molding surface is moved in a direction of moving closer to a second one and abuts on the second one before start of molding, and setting, as a molding start position, a position where the first one is moved from the abutting position in a direction of moving away from the second one by a desired thickness of a rubber member at the start of molding,
• before setting the abutting position, moving a sensor that detects that the first one moves closer to and abuts on the second one forward until the sensor contacts the molding surface, and when the sensor contacts the molding surface, stopping the sensor and setting a detection value of the sensor at this stop position to a zero point of the sensor.